<!DOCTYPE html>
<html>
    <head>
		<meta charset="UTF-8">
		<title></title>
	</head>
	<body>
		<script src="../../vue.js"></script>
		<script>
		    const {reactive, watchEffect} = Vue;
		    const state = reactive({
               count: 0
            })
            
            watchEffect(() => {
               document.body.innerHTML = `count is ${state.count}`
            })
		</script>
	</body>
</html>